Actress Candace Cameron Bure attends the launch of the Polar Bear Plunge at the...Actress Candace Cameron Bure attends the launch of the Polar Bear Plunge at the World Famous San Diego Zoo on March 26, 2010 in San Diego, California.LessMore

Actress Denise Richards attends the launch of the Polar Bear Plunge at the World...Actress Denise Richards attends the launch of the Polar Bear Plunge at the World Famous San Diego Zoo on March 26, 2010 in San Diego, California.LessMore

Actor Dean McDermott with his children Stella McDermott and Liam McDermott play on the arctic research helicopter at the launch of the Polar Bear Plunge at the World Famous San Diego Zoo on March 26, 2010 in San Diego, California.

Actor Dean McDermott with his children Stella McDermott and Liam McDermott play on...Actor Dean McDermott with his children Stella McDermott and Liam McDermott play on the arctic research helicopter at the launch of the Polar Bear Plunge at the World Famous San Diego Zoo on March 26, 2010 in San Diego, California.LessMore

Actress Ariel Winter attends the launch of the Polar Bear Plunge at the World...Actress Ariel Winter attends the launch of the Polar Bear Plunge at the World Famous San Diego Zoo on March 26, 2010 in San Diego, California.LessMore

Actress Tori Spelling and her son Liam McDermott break the ice during the ribbon cutting at the launch of the Polar Bear Plunge at the World Famous San Diego Zoo on March 26, 2010 in San Diego, California.

Actress Tori Spelling and her son Liam McDermott break the ice during the ribbon...Actress Tori Spelling and her son Liam McDermott break the ice during the ribbon cutting at the launch of the Polar Bear Plunge at the World Famous San Diego Zoo on March 26, 2010 in San Diego, California.LessMore

Actress Ariel Winter attends the launch of the Polar Bear Plunge at the World...Actress Ariel Winter attends the launch of the Polar Bear Plunge at the World Famous San Diego Zoo on March 26, 2010 in San Diego, California.LessMore

Actors Tori Spelling and Dean McDermott with their children Stella McDermott and Liam McDermott arrive to the launch of the Polar Bear Plunge at the World Famous San Diego Zoo on March 26, 2010 in San Diego, California.

Actors Tori Spelling and Dean McDermott with their children Stella McDermott and...Actors Tori Spelling and Dean McDermott with their children Stella McDermott and Liam McDermott arrive to the launch of the Polar Bear Plunge at the World Famous San Diego Zoo on March 26, 2010 in San Diego, California.LessMore

Actress Bella Thorne attends the launch of the Polar Bear Plunge at the World...Actress Bella Thorne attends the launch of the Polar Bear Plunge at the World Famous San Diego Zoo on March 26, 2010 in San Diego, California.LessMore